Automatic ignition-control device for engines



Oct. 11, 1.927. 10

D. J. BAAS AUTOMATIC IGNITION CONTROL DEVICE FOR ENGINES Filed June 1. 1925 Tl/ll Patented Oct. 1 1, 1927.

UNITED STATES DICK J. BAAS, OF PEASE, MINNESOTA.

AUTOMATIC IGNITION-CONTROL DEVICE FOR ENGINES.

Application filed June 1, 1925. Serial No. 34,155.

This invention relates to an improved device adapted for use in association with a water tank, and the purpose is to provide a means for automatically stopping a pump 6 operating engine by short circuiting the ignition circuit.

The principal object is to prevent water from overflowing a reservoir or tank by utilizing the water itself as a means for bridging spaced contacts on a circuit closing device so that when the water reaches a predetermined level, it will bridge said contacts, close the circuits, and short circuit the ignition to the engine, whereby to stop the engine and :to prevent further pumping of water to the tank.

The invention is characterized by utmost simplicity of construction, the same simply embodying a circuit closing device mounted on the tank in a position to be acted on by the water, together with conducting wires.

Other features and advantages of the invention will become apparent from the following description and drawing.

95 In the accompanying drawing forming a part of this application and in which like numerals are employed to designate like parts throughout the same:

Figure 1 is a. side elevation, with portions in section, showing the engine, pump, tank,

and the improved short circuiting device.

Figure 2 is an enlarged detail sectional view of the circuit closer per se.

Referring to thedrawing in detail, the reference character 1 designates an ordinary internal combustion engine such as is used for operating a conventional form of water pump 2. The water is carried from the pump up through a pipe 3 and delivered into a reserve tank 4 mounted u on an ap propriate support 5. These details are conventional.

The invention comprises a circuit closer 6, and this is preferably of the construction shown more plainl in Figure 2. Referring to Figure 2 it wil be seen that the same comprises a cup? with an insulation filler, there being a contact or electrode 8 carried thereby. At the top is a binding post- 9 with which a current ground wire 10 is connected.

Extending through the center of the cup is a tube 11 filled with insulation in which an electrode 12 is embedded. The current supply wire or cable 13 is connected with this electrode. The ground wire is secured by every phase.

a clamp 14 upon the pump pipe 3, and the current is thereby carried down the pipe, and diverted through a ground wire 15 anchored upon the base of the engine. In this connection" I might state that the ground wire can simply be carried down and con,- nected to a peg driven in the ground. The current conducting wire 13 is connected with apart-15 of the ignition system of the engme.

It is clear from the foregoing that after the engine has started and water has been elevated into the tank 4 by the pum 2, when the water level reaches a certain eight in the tank, it will bridge the electrodes 8 and 12. It is clear that when this happens, the current ordinarily passing through the ignition system of the engine is shunted through this supplemental circuit provided, .and is grounded. Thus, the engine is stoppedand further pumping of water to the tank is prevented. Consequently, the water will not overflow from the tank.

An invention of this kind is characterized by exceeding simplicity, owing to the fact that no floats or movable parts are employed, and there are no parts to get out of order. This is connected in parallel with the ignition circuit of the engine, and the engine ignition and invention operate independent of each other. The device may be used to good advantage on stock farms for supply tanks in barns or tanks outside, in the astures. It automatically regulates the evel of the water in the tank, absolutely prevents overflowing, and obviates the necessity of the farmer maintaining a watch over the pumping operation. The farmer can start the engine and then leave it and attend to his other work, and the level of the water in the tank will be automatically controlled. The invention .has been .actually used, and has proved to be successful in It is particularly useful in conjunction with high tension ignition used either on high tension magnetos, or jump spark coil and battery systems. There is no regulation of distance between the engine and tank. These and other advantages and feature of the invention have doubtless been made clear by the foregoing description and drawin s and will be appreciated by those skilled in the art to which the invention relates. For this reason a more lengthy description is thought unnecessary.

Minor changes coming Within the field of invention claimed may be resorted to if desired.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent is As an article of manufacture, a circuit controlling device, comprising a cup-shaped receptacle, a tubular member formed of insulating material mounted in and havin one end extending through an opening in the bottom of said receptacle, and terminab ing in spaced relation below said bottom, a

a; neeaaro filler of insulating material mounted in said tubular member, and an electrode secured in said tubular member by said filler and extending beyond the end of said member, a second electrode mounted on the side and -projecting beyond the bottom of said cupmen J. Bias. 

